Ceiling fan



June 1 1926.

C. AALBORG CEILING FAN original Filed Nov. 4, 1918 :s sheets-sheet 1 I l W lsuumm'wwmmmm SWW-ww ATTORNEY 5 MQW June 1 1926. 1,586,638

C. AALBORG CEILING' FAN 3 Sheets-Sheet 2 Original Filed NDV. ,4' 1918 INVENTOR ChrisJrian Aalborg.

MMM/V ATTORNEY WlTNES/SES:

CEILING FAN Original Filed NOV- 4I 1918 3 Sheets-Sheet 3 ATTORNEY Fig. d, comprises an oil reservoir 22 at the lower end of the shaft 6 and an additional reservoir 23 disposed at the junction of the high and low-speed sleeves 8 an-d 16, thus insuring' a supply ofoil at that important point. rfhe shaft 6 is provided with helical grooves 2de whereby the oil is carried vertically along the shaft to a chamber 25 from which itdrains back into the reservoir 23 by means of a passage 2li. Gil, overflowing from the reservoir QS, drains into the reservoir 22, thus preventii'ig` the drippingl of any oil therefrom.

lllhile I have shown my invention in a plurality of forms, it will be obvious to those skilled in the art that it is not so limited but is susceptible of various minor changes and modifications without depart ing' 'rom the spirit thereoit", and I desire. therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or are specifically set forth in the appended claims.

I claim as my invention:

1. In an electric fan, in combination, a motor provided with a stationary shaft and a rotor rotatably mounted on the shaft, a plurality of fan wheels disposed to revolve about the shaft, a drive interposed between the fan wheels and rotor for rotating the fan wheels about their respective axes, and means actuated by the drive co-operative with the shaft to move the fan wheels in a predetermined path as they rotate.

2. In an electric fan, in combination, a motor provided with a stationary shaft and a rotor rotatably mounted on the shaft, a plurality of fan wheels disposed to revolve about the shaft, a drive interposed between the fan wheels and rotor for rotating the fan Wheels about their respective axes, said drive beingadapted to revolve about the axes of the motor shaft, and means actuated by the drive co-operative with the shaft to move the fan wheels in a predetermined path as they rotate.

3. In an electric fan, in combination, a

`motor provided with a stationary shaft and a rotor rotatably mounted on the shaft, a plurality of fan wheels disposed to revolve about the shaft, a drive interposed between the fan wheels and rotor for rotating` the fan wheels about their respective axes, a worm fixed to the motor shaft and a train of gears actuated by said drive disposed to engage said worm co-operative to give the fan wheels a circulatory movement as they rotate.

4f. In a ceiling fan, a plurality of sets of fan blades and a motor consisting of a stator comprising a magnetic field frame and a worm-threaded shaft, and a rotor comprising` an armature mounted on a worm-threaded sleeve concentrically mounted upon and supported by said shaft, and

threaded means coacting with said sleeve and said shaft to cause rotation of said individual fan sets and also to cause rotation of said sets about said shaft as an axis.

In a ceiling fan, a plurality of sets of fan blades and a motor consisting of a stator comprising a magnetic field frame and a worm-threaded shaft, and a rotor comprising an armature mounted on a wornrthreiuled sleeve concentrically mounted upon and supported by said shaft, and threaded means coacting with the threaded portions of said shaft and of said sleeve to cause rotation of said individual fan sets and also to cause rotation of said sets about said shaft as an axis.

G. In a ceiling fan, a plurality of sets of fan blades and a motor consisting of a stator comprising a magnetic field frame and a worm-threaded shaft, and a rotor comprising an armature mounted on a wormthreaded sleeve conc'entrically mounted upon and supported by said shaft. and additional worm-threaded shafts driven by said sleeve and driving said individual sets of fans, one of said additional shafts engagu ing` a worm-threaded shaft which engages the threads on said first named shaft to cause rotation of said sets of fans about a common airis.

7. In a ceiling' fan, a plurality of sets of fan blades and a motor consisting` of a stator comprising a magnetic lield frame and a worm-threaded shaft, and a rotor comprising an armature mounted on a rela tively high-speed worm-threaded sleeve concentrically mounted upon and supported by said shaft, and a relatively low-speed sleeve concen'trically mounted on said shaft in endto-end relation with said high-speed sleeve, and worm-threaded .shafts driven by said liiglrspeed sleeve and rotatably connected to said fan sets, and an additional worm threaded shaft engaging one of the said driven worm-threaded shafts and engaging the stationary shaft, said slow-Saeed sleeve forming bearings for said worm-threadml shafts. y

8. A fan mechanism comprising a single driving motor, a plurality of suppoitinj; arms pivotally mounted thereon, a plurality of fan sets mounted on said arms, wornr-x mounted on said motor structure and operatively associated with said motor and having their rotative axes coincident with the pivotal axis of said supporting arms, and additional worms mounted on said supporting arms in engagement with said first named worms and operatively associated with said fan sets.

In testimony whereof, I have hereunto subscribed my name this second day of January, 1923.

CHRISTIAN AALB ORG. 

